My OpenLearn Create Profile
- Personalise your OpenLearn profile
- Save Your favourite content
- Get recognition for your learning
Already Registered?
Tuesday, 21 July 2026, 12:06 AM
Site: OpenLearn Create
Course: Urban Sanitation and Solid Waste Management (UrbanSanWaste_1.0)
Glossary: Glossary
P
pHmeasure of acidity and alkalinity. It has a scale from 0 to 14: pH 7 is neutral, less than 7 is acid and more than 7 is alkaline (6) |